// Copyright 2017 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package sum

// All returns the sum of the given values.
func All(vs ...int) int {
	return recursive(vs)
}

func recursive(vs []int) int {
	if len(vs) == 0 {
		return 0
	}
	return vs[0] + recursive(vs[1:])
}
